The projects are being designed to create new jobs in the wake of Bord na Móna/ESB closures.
A number of Just Transition projects may not proceed if local organisations cannot secure matched funding.
The Department of the Environment has confirmed to Offaly County Council that the schemes cannot commence without the funding.
The local authority, which says it's not in a position to provide the money, has described the financial obligations as 'onerous.'
Independent councillor John Leahy says small communities, close to each other like Ferbane and Kilcormac, will struggle to match their funds:
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